Compound Interest Calculator
See how a starting amount and monthly contributions can grow over time at a given annual return, with a year-by-year table.
Final balance–
Total you put in–
Growth–
| Year | Balance |
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How it works
Interest compounds monthly at (annual rate ÷ 12), and each contribution is added at the end of the month. Final balance = principal × (1 + r)^n + contribution × ((1 + r)^n − 1) ÷ r, where r is the monthly rate and n is the number of months. Real returns vary and are never guaranteed; this is an illustration, not a forecast.
Risk notice. This content is for general information and education only. It is not investment, financial, tax or legal advice, and it is not a recommendation to buy or sell any asset. Markets involve risk, including loss of capital. Do your own research or consult a licensed professional.